I've actually used it to map out databases... But then the new visio can do that as well... I've never gotten that involved with building web stuff with it though as I found the documentation just too ... confusing.

There are books on it, but you better have a good java/javascript background to do anything fancy.

The old nextstep EOF thing (the precurser to WO) looked way more easier to get around IMHO...

To me the 'cool' thing about WO was you get the yellowbox!.. that is way more entertaining (well to me).